Description: Token expiration is the time limit after which a token is no longer valid. In the context of web application security, a token is a string of characters used to authenticate and authorize a user in a system. Token expiration is a crucial security measure that helps protect the data and resources of applications. When a token expires, the user must re-authenticate to obtain a new token, which reduces the risk of unauthorized access. This practice is especially important in applications that handle sensitive information, as it limits the time during which an attacker could use a stolen token. The implementation of token expiration can vary, allowing configurations such as short expiration times for high-security sessions or longer times for less critical user sessions. Additionally, token expiration can be complemented with renewal mechanisms, where a user can obtain a new token without needing to re-enter their credentials, as long as their session remains valid. In summary, token expiration is an essential component in the security architecture of web applications, contributing to the protection of information and system integrity.
